GUILLERMO EDUARDO GRANADOS DAVALOS

I’m a Senior Backend Engineer with 6+ years of end-to-end ownership of production-grade systems using Node.js, NestJS, TypeScript, and Python. I take features from problem clarification through technical design, implementation, deployment, monitoring, and production support.

I’ve deep expertise in PostgreSQL optimization (40% query time reduction) and building resilient event-driven architectures (SQS, SNS, EventBridge, Kafka) with circuit breakers, retries, and multi-provider fallback logic. I’ve architected microservices serving thousands of concurrent users at 99.9% uptime with sub-200ms response times, and I’ve integrated Redis to cut database load by 60%.

I’m a strong advocate for code quality and observability—consistent 85%+ test coverage, rigorous code reviews, and comprehensive monitoring with CloudWatch. I also integrate LLM APIs (Claude and Grok) into production applications, using prompt engineering and structured outputs to deliver reliable AI-powered features in real environments.